Proven Blaze by Sonance PowerZone Connect 2004 – 2000W 4-Channel DSP Amplifier for Scalable Commercial Audio
The Blaze by Sonance PowerZone Connect 2004 is a 2000W DSP-enabled Class-D amplifier with four high-current output channels in a full-rack 2RU chassis. It delivers 500W per channel into 2Ω or 4Ω loads, bridgeable to 1000W per pair, with the full PowerZone™ Control DSP suite and hybrid Lo-Z/Hi-Z operation — all without the added cost of Dante networking. For projects where analogue signal infrastructure is already established and AoIP is not part of the specification, the 2004 provides the practical middle ground in the 2U 4-channel range.
Powered by Pascal UMAC™ Class-D technology, the PowerZone Connect 2004 gives integrators across Africa a 2Ω-capable, bridgeable, four-zone amplifier that handles conference centres, hotel function rooms, medium-format worship spaces, retail complexes, and multi-building campuses. It shares the identical output stage, chassis, and DSP platform as the Dante-enabled 2004D — making it easy to spec the non-Dante variant now and upgrade to the 2004D on future networked projects without relearning the system.
Design and Construction of the Blaze by Sonance PowerZone Connect 2004
The PowerZone Connect 2004 uses the same full-width 2RU chassis shared across the entire 2U series — 88 × 440 × 332 mm (3.5″ × 17.3″ × 13.1″) at a weight of 7.4 kg. The form factor provides the thermal management and power supply capacity needed to sustain 2000W of continuous output into demanding loads, while fitting neatly into standard 19″ equipment racks alongside two-channel and eight-channel models from the same family.
The output stage runs on Pascal’s UMAC™ Class-D platform — a full-bandwidth PWM modulator engineered for ultra-low distortion. Like all 2U models, the 2004 supports loads down to 2Ω in single-ended mode and offers bridge-tied load (BTL) operation for doubling voltage swing into higher-impedance loads. The UREC™ universal mains switch-mode power supply features Power Factor Correction (PFC) and an integral standby converter, accepting 100–240V AC at 50–60 Hz. Power consumption is 700W at full load.
Comprehensive protection circuits guard against short circuit, DC fault, under-voltage, thermal runaway, and overload conditions. The unit is UL listed, ErP and Energy Star compliant, and includes an integrated wireless access point (WAP) for cable-free commissioning via Wi-Fi. All of this is backed by Blaze’s standard five-year warranty.
Performance and Applications for the PowerZone Connect 2004
In single-ended Lo-Z mode, each of the four channels delivers 500W into 2Ω or 4Ω loads and 250W at 8Ω. That gives you four independently addressable zones, each with enough headroom for full-range loudspeaker cabinets, column arrays, or surface-mount boxes at foreground music and speech reinforcement levels in medium-to-large rooms.
Bridge the outputs into two pairs and each delivers 1000W into 4Ω or 8Ω — serious power for driving subwoofers, high-output cabinets, or large column arrays. In Hi-Z mode, two bridged channels each deliver 1000W at both 70V and 100V. A kilowatt per constant-voltage line covers extensive distributed speaker networks across multiple building wings, hotel floors, or campus zones.
The built-in PowerZone™ Control web app delivers the same full-matrix DSP as every other PowerZone Connect model: multizone routing, input mixing, priority and ducking for paging, restriction, parametric EQ on inputs and outputs, high-pass filtering, speaker presets, delay, sine generator, Wall-S1 controller configuration, and Master/Slave S/PDIF linking for cascading multiple amplifiers. Access it from any browser via the built-in Wi-Fi or the RJ45 network port.
Audio quality is excellent: signal-to-noise ratio exceeds 106 dB (A-weighted), THD+N stays below 0.05%, and frequency response holds within +0/−0.25 dB across 20 Hz – 20 kHz into an 8Ω load. Typical applications include conference centres and ballrooms, hotel function rooms and multi-floor audio, medium-to-large houses of worship, multi-tenant retail complexes, corporate campuses, education facilities with auditoriums, and fitness centres requiring high-energy foreground zones alongside quieter background areas.
Specifications – Blaze by Sonance PowerZone Connect 2004
- Total System Power: 2000W
- Output Channels: 4 (SE Lo-Z) / 2 (BTL Lo-Z or Hi-Z)
- Output Power @ 2Ω (SE): 4 × 500W
- Output Power @ 4Ω (SE): 4 × 500W
- Output Power @ 8Ω (SE): 4 × 250W
- Output Power @ 4Ω (BTL): 2 × 1000W
- Output Power @ 8Ω (BTL): 2 × 1000W
- Output Power @ 70V (BTL): 2 × 1000W
- Output Power @ 100V (BTL): 2 × 1000W
- Amplifier Topology: Pascal UMAC™ Class-D, full-bandwidth PWM modulator
- Output Voltage: 65Vp / 130Vpp (SE unloaded) — 130Vp / 260Vpp (BTL unloaded)
- Signal-to-Noise Ratio: > 106 dB (A-weighted, 20 Hz – 20 kHz, 8Ω load)
- THD+N (typical): < 0.05% (20 Hz – 20 kHz, 8Ω, 3 dB below rated power)
- Frequency Response: 20 Hz – 20 kHz (+0/−0.25 dB, 8Ω, 3 dB below rated power)
- Power Consumption: 700W
- Standby Consumption: < 0.5W (ErP & Energy Star compliant)
- Power Supply: UREC™ universal mains SMPS with PFC
- Operating Voltage: 100–240V AC, 50–60 Hz
- Operating Temperature: 0–40°C
Connectivity and Control
- Analogue Inputs: 4 × analogue inputs (RCA/Euroblock)
- Digital Audio: 1 × stereo S/PDIF input/output
- Network: RJ45 Ethernet port + built-in Wi-Fi / WAP (for PowerZone™ Control web app)
- GPIO: Configurable general-purpose input/output
- S/PDIF Link: Master/Slave cascading between multiple amplifiers
- Dante™ Option: Available as the PowerZone Connect 2004D variant (sold separately)
- DSP Control: PowerZone™ Control web app (built-in) — full-matrix routing, multizone, input mixing, priority/ducking, restriction, parametric EQ, HPF, speaker presets, delay, sine generator, Wall-S1 configuration
Protection and Safety
- Protection Circuits: Short circuit, DC fault, under-voltage, thermal, overload
- Safety Certifications: UL listed audio equipment
- Energy Compliance: ErP 1275/2008/EC and Energy Star
- Warranty: 5 years
Physical Dimensions and Mounting
- Form Factor: Full-rack width, 2RU height
- Dimensions (H × W × D): 88 × 440 × 332 mm (3.5″ × 17.3″ × 13.1″)
- Weight: 7.4 kg (16.3 lbs)
- Mounting: Standard 19″ rack mount
Conclusion
The Blaze by Sonance PowerZone Connect 2004 is the practical middle ground in the 2U 4-channel range — delivering 2000W across four channels with 2Ω drive capability, bridgeable 1000W outputs, and the full PowerZone™ Control DSP suite, all without the cost of integrated Dante networking. It provides more power than the 1U lineup can offer while keeping the budget below the 3004 when the extra headroom is not needed.
For integrators across Africa, the 2004 is the versatile workhorse of the 2U series. It shares the identical chassis, output stage, and five-year warranty as the 2004D, so upgrading to Dante on a future project means swapping one model number — not relearning a new platform. Pair it with 1002 or 1502 units for dedicated sub and foreground channels, or combine it with 8-channel 4008 or 6008 models for expanded zone counts. Combined with Blaze Ci, CBL, or CCA Series loudspeakers — or any compatible 2Ω–16Ω and 70V/100V speakers — the 2004 anchors a scalable, professionally managed audio system at a competitive price point.
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About Blaze by Sonance.
Blaze by Sonance (formerly Blaze Audio) was founded in Copenhagen, Denmark in 2020 as a brand of Pascal A/S, a global leader in professional amplifier electronics. Acquired by Sonance in May 2025, Blaze brings Danish precision engineering and a focused product lineup of high-performance amplifiers and sound reinforcement loudspeakers to the installed sound market.
